Question 24. How To Migrate An Instance To Another Availability Zone ? Answer : You can migrate your EC2 instance from one Availability Zone to another. Following are the steps to migrate an Instance to another Availability Zone: Create an AMI from the running instance Launch an instance from the AMI that you just created, specify the new Availability Zone You can use the same instance type as the original instance, or select a new instance type If the original instance has an associated Elastic IP address, then associate it with the new instance If the original instance is a Reserved Instance, change the Availability Zone for your reservation
Question 46. What Are The Main Features Of Classic Load Balancer In Ec2 ? Answer : Some of the main features of Classic Load Balancer (CLB) in Amazon EC2 are as follows: Health Check: Based on the result of Health Check, Classic Load Balancer can decide to route the traffic. If any instance has unhealthy results, CLB will not route the traffic to that instance. Security: We can create security groups for CLB in Virtual Private Cloud (VPC). With these features, it is easy to implement secure load balancing within a network. High Availability: With CLB, we can distribute traffic among EC2 instances in single or multiple Availability Zones. This helps in providing very high scale of availability for the incoming traffic. Sticky Sessions: CLB also supports sticky session by using cookies. The sticky sessions make sure that the traffic from a user is always routed to the same instance so that user gets seamless experience. IPv6: CLB also support Internet Protoco...
Question 48. What Is A Placement Group In Ec2 ? Answer : AWS provides an option of creating a Placement Group in EC2 to logically group the instances within as single Availability Zone. We get the benefits of low network latency and high network throughput by using a Placement Group. Placement Group is a free option as of now. When we stop an instance, it will run in same Placement Group in restart at a later point of time. The biggest limitation of Placement Group is that we cannot add Instances from multiple availability zones to one Placement Group. Question 49. What Types Of Issues Do You Face While Connecting To An Ec2 Instance ? Answer : Some of the possible connection issues with EC2 instance are: Connection time out Permission denied due to host key not found Unprotected private key file Permission denied due to user key not recognized by server No supported authentication method available Server refused the key AWS Video Training
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